This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661 Brake Lining Quality Test Procedure and SAE J2975 Measurement of Copper and other elements in Brake Friction Materials. NOTE: It is emphasized that this document does not establish friction requirements for brake linings, nor does it designate significant characteristics of brake linings which must be considered in overall brake performance. Due to other factors that include brake system design and operating environment, the friction codes obtained from this document cannot reliably be used to predict brake system performance.
SAE J866-2012 Referenced Document
SAE J2975-2011 Measurement of Copper and Other Elements in Brake Friction Materials
SAE J661-1997 Brake Lining Quality Control Test Procedure
SAE J866-2012 history
2019SAE J866-2019 Friction Coefficient Identification and Environmental Marking System for Brake Linings
2012SAE J866-2012 Friction Coefficient Identification and Environmental Marking System for Brake Linings
2002SAE J866-2002 Friction Coefficient Identification System for Brake Linings
1996SAE J866-1996 Friction Identification System for Brake Linings and Brake Blocks for Motor Vehicles
1985SAE J866-1985 Friction Coefficient Identification System for Brake Linings
1966SAE J866A-1966 Friction Identification System for Brake Linings and Brake Blocks for Motor Vehicles
1964SAE J866-1964 FRICTION IDENTIFICATION SYSTEM FOR BRAKE BLOCKS FOR COMMERCIAL VEHICLES